AAC block for speaker cabinet

[exipnos]

Hi there,

AAC stands for autoenclave aerated concrete. Its used in construction of energy efficient house walls. It a very light weight conrete that actually floats in water. It contain a multitude of small airbubbles. The material is supposedly quite good at soundinsulation.

http://www.toolbase.org/Technology-I...rated-concrete

My house is built out of AAC and I was wondering if this would be a good material for building speaker cabinets? Its very easy to work with and could be cut with regular wood saw. It comes in different sizes of blocks and using this material would be quite easy to build an rounded enclosure.

Would it be a good idea?

Exipnos

[joe carrow]

It looks interesting, but I didn't immediately see anything about stiffness. Part of the appeal of a concrete enclosure is the extreme mass. People have build concrete horns and enclosures in the range of hundreds of kilograms- certainly not portable.

It looks to me like the advantage of the AAC is that it is light enough that you might be able to make a reasonably light structure out of it; something that wouldn't need a forklift to move. It's hard to say if it would make a superior material- but it would certainly be interesting to experiment with.

If you do it, please let us know how it goes. Don't invest too much in your first prototype, or the shortcomings may be too painful. Also, it might be a good idea to make a partial baffle out of aluminum plate, say 10-20 mm thick, so that you don't need to attach the driver directly to the AAC.